/**
 * A message containing letters from A-Z is being encoded to numbers using the following mapping:
 * 'A' -> 1
 * 'B' -> 2
 * ...
 * 'Z' -> 26
 * Given an encoded message containing digits, determine the total number of ways to decode it.
 * For example,
 * Given encoded message "12", it could be decoded as "AB" (1 2) or "L" (12).
 * The number of ways decoding "12" is 2.
 */
/**
 * @author Ivan
 *
 */
package problem91_Decode_Ways;